Thanks. Unchecked Signing and problem solved.

This blog entry at MSDN states compatible with 2005 and Later (in the designer), but runtime apps should still work with earlier. http://blogs.msdn.com/webdevtools/archive/2010/05/03/visual-studio-2010-support-with-sql-server.aspx[^] Dave Don't forget to rate messages! Find Me On: Web|Facebook|Twitter|LinkedIn Waving? dave.m.auld[at]googlewave.com modified on Sunday, May 23, 2010 12:17 PM

Thanks That is the correct solution. best regards DCA